KCONOMIC ZOOLOGY ENTOMOI AUiV. 653 



Tlio authors riH-oiiiiiii'iul as a j^oiicral ])r()Kraiiiino for controUiii.i,' the llossiaii 

 fly that s<>(mI shouhl lu' selected from a crop showinji Iai"s;e or medium straw 

 witli exceUeut stooluij; (|ualities. The jrrouud shouhl he thorou.iihly cultivated 

 and the seed sown not too late, since tlw damaj^ie can sometimes he overcome 

 more sufccssfidly hy early sowin;,' llian it can he avoich'd hy late sowin.i;. 



The locust plague, M. '!'. I'i/.akho (Com. I'nr. .\</r. | l/r'.i/ro |. ('in: .IJ. pp. 11, 

 fil/s. II \. — Arsenical spi'ays have proved (piite ellicicnt in cdutrollin.:,' injurious 

 locusts in Mexico. Mention is also made of locust fundus, tlie uses of various 

 mechanical devices, and the l)enetits derived from the presence of insectivorous 

 hirds. 



The locust invasion, ('. 1". Loinsbury {A{Ii: ■lour. Cape (looil Hope, 29 

 (1!)06), Xo. 5, pp. ■')!)(!-()(}()). — An outline is f?iveu of the means hy which the local 

 government proposes to aid in the extermination of locusts. The government 

 furnishes men to organize campaigns against the locust and also assists 

 infested districts hy furnishing spraying materials. 



The control of locusts, F. Lahille {lioJ. Min. Agr. \ Bhciiok . 1 .(//c.v | , a (1906), 

 Ao. 1-2-.3. pp. 69-109, pU. 3, flfjs. 2).— The life history and habits of locusts are 

 described with si)ecial reference to suitable methods for coutrolllng these 

 insects. Consideral)le success lias been had from the use of a poisoned bait 

 containing sugar and white arsenic. A cpiite thorougli test was made of 

 Empuxa (icridil which was distributed over large areas infested with locusts. 

 Other fungi were also tested with fairly satisfactory results. 



The author found that a mite (Podapolipiis hcflei^ri) renders some assistanc(> 

 in controlling locusts Ity living as a parasite upon them. Tliis mite is described 

 in all its stages. i 



The rice grasshopper, J. B. Knight and R. M. Dixon (Dept. Aijr. Boiiihai/ 

 Bill. ..^7. /ip. 'i. fiffx. 3). — HierodJyphux fiircifer attacks rice, sugar cane, sorghum, 

 corn, and vaiMcms cultivated as well as wild grasses. The pest is described in its 

 various stages and notes are given on its natural enemies which assist some- 

 what in its control. In combating the insect, infested fields slHmld be thor- 

 oughly ])l()wed in January and February. Good results are also reported from 

 the use of sweejiing nets in catching the young insects. 



The San Jose or Chinese scale, C. L. Marlatt (U. S. Drpt. A</r.. Bur. Eiit. 

 Bill. 62. pp. S9, pl.^. 9, fifiH. 12). — The Bureau has previously published general 

 accounts of the San Jose scale in Bulletin 3 (E. S. R., 8, pp. 5U(), 501) and in 

 Bulletin IL' ( F. S. IJ.. TO, pp. 370, 371). The present bulletin is a thorough 

 revision (jf jirevions publications on San Jose scale by the Bureau with addi- 

 tional notes regarding the travels of the author through China and other Asiatic 

 countries aiid the evidence in favor of considering China as the original home 

 of this scal(>. 



The San Jose scale in Alabama, F. H. Carik)ZA (Alabaina Tiiskrf/ce >S7ff. Bui. 

 9, pp. 10. pi. 1). — This bulletin c(mtains practical information for the use of 

 colored farmers in Alabama. It is reconnnended that badly infested trees be 

 sprayed soon after the wood has matured in the fall and again in the spring 

 before the buds open. The best results were obtained from tlie use of a lime- 

 sidjihur-salt solution made in the i)roportion 2r> : IG: 10: Ho. 



Commercial miscible oils for treatment of the San Jose scale, I'. .1. I'akkott. 

 II. K. IIouoKiss, and F. A. Sikrink (Sew York State Stu. Bui. 2SI. pp. 261- 

 270). — Proprietar.v miscible oils were tested in spraying 1,368 trees in solu- 

 tions containing 1 jiart oil to from 10 to 25 parts of water. The weaker solutions 

 failed to trivc uuiloiin results, altlnmgh the fruit was somewhat spotted by the 

 treatment. When used at the rate of 1 part of oil to 10 or 15 parts of water 

 the scale insects were more completely destroyed, but the mixtures were not 



